Tensiometers: Theory, construction, and use
D.I. Stannard
1992, Geotechnical Testing Journal (15) 48-58
Standard tensiometers are used to measure matric potential as low as −870 cm of water in the unsaturated zone by creating a saturated hydraulic link between the soil water and a pressure sensor. The direction and, in some cases, quantity of water flux can be determined using multiple installations.A variety...
Techniques for estimating 7-day, 10-year low-flow characteristics for ungaged sites on streams in Mississippi
Pamela A. Telis
1992, Water-Resources Investigations Report 91-4130
Mississippi State water laws require that the 7-day, 10-year low-flow characteristic (7Q10) of streams be used as a criterion for issuing wastedischarge permits to dischargers to streams and for limiting withdrawals of water from streams. This report presents techniques for estimating the 7Q10 for ungaged sites on streams in Mississippi...
Nutrient budget for Devils Lake, North Dakota
Steven K. Sando
1992, Conference Paper, Proceedings, North Dakota Water Quality Symposium
No abstract available....
A survey of naturally occurring radionuclides in groundwa ter in selected bedrock aquifers in Connecticut and implications for public health policy
C.J. Dupuy, D. F. Healy, M.A. Thomas, D.R. Brown, A.J. Siniscalchi, Z.F. Dembek
1992, Book chapter, Regulating drinking water quality
No abstract available ...
Impact of bacterial kidney disease on Chinook salmon smolts during migration, collection, and transportation
D.G. Elliott
1992, Conference Paper, Proceedings of the Chinook Salmon Smolt survival workshop
No abstract available ...
Paleoceanographic and tectonic controls on the Pliocene diatom record of California
J.A. Barron
1992, Book chapter, Pacific Neogene; environment, evolution, and events
No abstract available ...
Effects of saline ground-water discharge on water quality of the Red River of the North, northeastern North Dakota
M.L. Strobel, P.J. Gerla
1992, Conference Paper, Proceedings, North Dakota Water Quality Symposium
No abstract available....
Evolution of fish rhabdoviruses
J. R. Winton
1992, Book chapter, Salmonid Diseases
No abstract available...
Fabrication of stainless steel spherical anodes for use with boat-mounted boom electroshocker
Patrick J. Martinez, Kenneth F. Tiffan
1992, North American Journal of Fisheries Management (12) 840-843
A frugal method of fabricating spherical anodes from stainless steel mixing bowls is presented. We believe that the purported mechanical disadvantages of using spherical electrodes are largely unfounded....
Sensitivity of ground - water recharge estimates to climate variability and change, Columbia Plateau, Washington
John J. Vaccaro
1992, Journal of Geophysical Research D: Atmospheres (97) 2821-2833
The sensitivity of groundwater recharge estimates was investigated for the semiarid Ellensburg basin, located on the Columbia Plateau, Washington, to historic and projected climatic regimes. Recharge was estimated for predevelopment and current (1980s) land use conditions using a daily energy-soil-water balance model. A synthetic daily weather generator was used to...
Evolution of coarse gravel bed forms: Field measurements at flood stage
Randy L. Dinehart
1992, Water Resources Research (28) 2667-2689
Field measurements to investigate the origin and growth of mesoscale gravel bed forms in deep flows were made in the North Fork Toutle River, Washington. Sonar observations of the gravel streambed at a stationary point were recorded during two storm flows in December 1989 and January 1990 with concurrent bed...
The Ecology of Tijuana Estuary: A National Estuarine Research Reserve
J. Zedler, C. Nordby, B. Kus
1992, Book
No abstract available at this time...
Use of agricultural drainwater impoundments by snowy plovers in the southern San Joaquin Valley, California
D.L. Roster, W.L. Hohman, D. A. Barnum
D. F. Williams, S. Byrne, T.A. Rado, editor(s)
1992, Endangered and sensitive species of the San Joaquin Valley, California: their biology, management, and conservation. 229-235
No abstract available at this time...
Extraordinary synorogenic and anoxic deposits amidst sequence cycles of the Late Devonian-Early Mississippian carbonate shelf, Lakeside and Stansbury mountains, Utah
K. M. Nichols, N. J. Silberling, P. H. Cashman, J.H. Trexler Jr.
1992, Book chapter, Field guide to geologic excursions in Utah and adjacent areas of Nevada, Idaho, and Wyoming
No abstract available ...
Histopathologic biomarkers
D.E. Hinton, P. C. Baumann, G. R. Gardner, W. E. Hawkins, J. D. Hendricks, R. A. Murchelano, M.S. Okihiro
R.J. Huggett, R. A. Kimerle, P. M. Mehrle, H.L. Bergman, editor(s)
1992, Book chapter, Biomarkers; biochemical, physiological, and histological markers of anthropogenic stress
No abstract available....
Tracking the movement of Hawaiian volcanoes; Global Positioning System (GPS) measurement
J.J. Dvorak
1992, Earthquakes & Volcanoes (USGS) (23) 255-267
Most, if not all, volcanic eruptions are preceded by surface movements near the volcano. These ground movements are the response of the shallow crust to the accumulation of the magma or the buildup of magma pressure within a subterranean reservoir beneath the volcano. As the magma reservoir expands, the summit...
Small explosions interrupt 3-year quiescence at Mount St. Helens, Washington
B. Myers
1992, Earthquakes & Volcanoes (USGS) (23) 58-73
On December 11, 1989, geologists working in the crater at Mount St. Helens discovered two thin layers of ash separated by fresh snow-clear evidence that at least two small explosions had occurred recently. The explosions were neither seen nor heard, but on December 7 scientists suspected that a small ash-producing...
Geochemical heterogeneity in a sand and gravel aquifer: Effect of sediment mineralogy and particle size on the sorption of chlorobenzenes
Larry B. Barber II, E. Michael Thurman, Donald D. Runnells
1992, Journal of Contaminant Hydrology (9) 35-54
The effect of particle size, mineralogy and sediment organic carbon (SOC) on sorption of tetrachlorobenzene and pentachlorobenzene was evaluated using batch-isotherm experiments on sediment particle-size and mineralogical fractions from a sand and gravel aquifer, Cape Cod, Massachusetts. Concentration of SOC and sorption of chlorobenzenes increase with decreasing particle size. For...
Correlation between atmospheric precipitation and recent explosions at Mount St. Helens, Washington
L. Mastin
1992, Earthquakes & Volcanoes (USGS) (23) 74-76
Scientists attribute the recent small explosion-like seismic signals at Mount St. Helens to either the geyser-like flashing of superheated groundwater to steam or the release of magmatic gas from the cooling magma system, or both. The contribution of magmaic gas in these events is not currently known. If meteoric water...
Strong-motion data
C. Mueller
1992, Earthquakes & Volcanoes (USGS) (23) 124-126
The April 25, 1992, mainshock (M=7.) near Petrolia and the two largest afterschokcs (M=6.6 and M=6.7) were recorded by networks of strong-motion accelerographs operated by the U.S Geological Survey (USGS) and the State of California Strong-Motion Instrumentation Program (CSMIP). The map on the next page shows the locations of USGS...
Preliminary seismological results
A. Michael, D. Oppenheimer, P. Reasenberg
1992, Earthquakes & Volcanoes (USGS) (23) 110-115
On April 25 and April 26, 992, three earthquakes with magnitude (M) equal to or greater than 6.6 occurred near Cape Mendocino, California. the sequence began with a relatively shallow earthquake (M=7.1) on Saturday, April 25, at 11:06 a.m. local time. The two most most powerful aftershocks has magnitudes of...
The October 1992 Parkfield, California, earthquake prediction
J. Langbein
1992, Earthquakes & Volcanoes (USGS) (23) 160-169
A magnitude 4.7 earthquake occurred near Parkfield, California, on October 20, 992, at 05:28 UTC (October 19 at 10:28 p.m. local or Pacific Daylight Time).This moderate shock, interpreted as the potential foreshock of a damaging earthquake on the San Andreas fault, triggered long-standing federal, state and local government plans to...
Earthquakes, September-October 1991
W. J. Person
1992, Earthquakes & Volcanoes (USGS) (23) 144-147
There were two major earthquakes (7.0-7.9) during this reporting period. the first was in the Solomon Islands on October 14 and the second was in India on October 19. Earthquake-related deaths were reported in Guatemala and India. Htere were no significant earthquakes in the United States during the period covered...
The 1991 eruptions of Mount Pinatubo, Philippines
Edward W. Wolfe
1992, Earthquakes & Volcanoes (USGS) (23) 5-37
Recognition of the volcanic unrest at Mount Pinatubo in the Philippines began when steam explosions occurred on April 2, 1991. The unrest culminated ten weeks later in the world's largest eruption in more than half a century. ...
Tectonic framework of the Northern California continental margin
S. H. Clarke Jr.
1992, Earthquakes & Volcanoes (USGS) (23) 94-100
The northern coast of California is one of the most seismically active regions in the continental United States. This activity is largely due to tectonic forces resulting from differing relative motions between three extensive lithospheric plates that meet in this region. These crustal plates are bounded by long fault systems-the...
